Writing instrument



FIG. 1 is a perspective view as seen from the top, front and right side of a writing instrument showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right elevational view, the left elevational view being a mirror image thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a plan view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view of a writing instrument of FIG. 1 with the writing tip exposed and the cap positioned on the bottom of the writing instrument barrel. 

The ornamental design for a “writing instrument”, as shown and described. 